we need to start with the science, and the science says that we have increasing temperatures and it's tributing more to the fires. >> gentlemen we'll dig into this more, but let's look at this summer, and paint us a picture of what the cost has been both in terms of dollars and homes, but also human lives. >> it certainly a terrible to see human lives being lost. in california we have had about one third of the normal precipitation this year. that is associated with climate change. and so california has been having a record number of forest fires, and if other states in the previous year, last year was much, much worst. >> and last year was one of the biggest firefighting seasons on record. sterling where you have seen the most damage? >> california is a big fire season every year. colorado the last couple of years has been particularly bad, but any of the western states are tinderboxes right now. you have 190 million acres at risk of wildfire. 40% of those are u.s. forest service. right now, colorado has been bu burning, we have lost lives, buildings, businesses -- people get double